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26

•

Using a spring puller (MTD Part No. 732-0571)or 
other suitable tool, disconnect the spring which is 
attached to a small hook found on the left, rear 
portion of the transmission (Refer to Figure 24) and 
the two springs which are attached to the rear 
portion of the tractor frame. See to Figure 32.

Figure 32

•

Place the deck engagement/lift lever in the 
BLADES STOP position.

•

Locate the two belt keeper pins, found on either 
side of the engine pulley, and use a 1/4-inch socket 
wrench to remove them from the lower frame. Refer 
to Figure 25.

NOTE: 

When reassembling, make certain belt keeper

pins are assembled in the same locations from which
they were removed.

•

Using an impact gun with a 5/8-inch socket, remove 
the hex screw with secures the engine pulley to the 
engine crankshaft.

•

Carefully lower the pulley off of the crankshaft and 
remove the belt from around it.

•

Disconnect the battery cables from the terminals 
(disconnect the NEGATIVE (Black) wire from it’s 
terminal first, followed by the POSITIVE (Red) 
wire). 

•

Detach the battery hold-down rod and remove both 
the battery and battery tray from the tractor.

•

Locate the transmission pulley though the battery 
tray opening. See Figure 33.

Figure 33

•

Using an impact gun with a 13/16-inch socket, 
remove the pulley from the transmission’s input 
shaft by removing the flange nut which secures it

•

Carefully lift the pulley off of the transmission’s 
input shaft and remove the upper drive belt from 
around it and the variable speed.

NOTE: 

A spacer is located beneath the transmission

pulley. Be careful not to lose the spacer and be certain
NOT reinstall the spacer upside down.

•

Remove the lower drive belt from around the lower 
portion of the variable speed pulley and feed it 
toward the shift cover panel opening.

•

Remove the lower drive belt by lifting it through the 
cover panel opening.

•

Reassemble new belts, following the previous 
instructions in reverse order.

IMPORTANT:

 When remounting the engine pulley, 

torque the hex bolt to between 38 foot-pounds and 50 
foot-pounds.

IMPORTANT:

 When remounting the transmission pulley, 

torque the flange nut to between 25 foot-pounds and 33 
foot-pounds. 

Springs

Transmission Pulley

Flange Nut

Содержание 660 Series

Страница 1: ...r state laws if any If a spark arrester is used it should be maintained in effective working order by the operator In the State of California the above is required by law Section 4442 of the California Public Resources Code Other states may have similar laws Federal laws apply on federal lands A spark arrester for the muffler is available through your nearest engine authorized service dealer or co...

Страница 2: ... experts Choose from the options below Visit mtdproducts com for many useful suggestions Click on Customer Support button and you will get the four options reproduced here Click on the appropriate button and help is immediately available If you prefer to reach a Customer Support Representative please call 330 220 4MTD or 1 800 800 7310 The engine manufacturer is responsible for all engine related ...

Страница 3: ...Plan your mowing pattern to avoid discharge of material toward roads sidewalks bystanders and the like Also avoid discharging material against a wall or obstruction which may cause discharged material to ricochet back toward the operator 8 Always wear safety glasses or safety goggles during operation and while performing an adjustment or repair to protect your eyes Thrown objects which ricochet ca...

Страница 4: ...ss can hide obstacles 3 Use slow speed Choose a low enough speed setting so that you will not have to stop or shift while on the slope Tires may lose traction on slopes even though the brakes are functioning properly Always keep machine in gear when going down slopes to take advantage of engine braking action 4 Follow the manufacturer s recommendations for wheel weights or counterweights to improv...

Страница 5: ...powered equipment from the truck or trailer and refuel it on the ground If this is not possible then refuel such equipment on a trailer with a portable container rather than from a gasoline dispenser nozzle d Keep the nozzle in contact with the rim of the fuel tank or container opening at all times until fueling is complete Do not use a nozzle lock open device e Extinguish all cigarettes cigars pi...

Страница 6: ...tc to protect the environment WARNING YOUR RESPONSIBILITY Restrict the use of this power machine to persons who read understand and follow the warnings and instructions in this manual and on the machine WARNING GO UP AND DOWN SLOPES NOT ACROSS AVOID SUDDEN TURNS DO NOT OPERATE THE UNIT WHERE IT COULD SLIP OR TIP IF MACHINE STOPS GOING UPHILL STOP BLADE S AND BACK DOWNHILL SLOWLY DO NOT MOW WHEN CH...

Страница 7: ...P E Do not mow on inclines with a slope in excess of 15 degrees a rise of approximately 2 1 2 feet every 10 feet A riding mower could overturn and cause serious injury If operating a walk behind mower on such a slope it is extremely difficult to maintain your footing and you could slip resulting in serious injury Operate RIDING mowers up and down slopes never across the face of slopes WARNING ...

Страница 8: ...the steering wheel beneath steering wheel cap Carefully pry off the steering wheel cap and remove the hardware NOTE There are two different styles of steering wheel cap See Figure 2 Styles vary by model Remove the steering bellow from its packaged location on the deck engagement lift lever found on the right hand side of tractor NOTE Tractor models 668 688 do NOT require a steering bellow and do N...

Страница 9: ...h the two hex screws removed earlier See Figure 3 Quick Adjustment Seat NOTE If your seat was shipped mounted backwards on the seat pivot bracket pull out the tab found on the seat stop and hold it open while sliding the seat off the seat pivot bracket See Figure 4 1 Line up the plastic seat spacers with the slots in seat pivot bracket 2 Slide seat in until front seat spacer engages the seat stop ...

Страница 10: ...G Maximum tire pressure under any circumstances is 30 psi Equal tire pressure should be maintained at all times The tires on your unit may be over inflated for shipping purposes Reduce the tire pressure before operating the tractor Recommended operating tire pressure is approximately 10 p s i for the rear tires 14 p s i for the front tires Check sidewall of tire for maximum p s i Identifying the M...

Страница 11: ...s WARNING Never leave a running machine unattended Always move the deck engagement lift lever into the disengaged BLADES STOP position Shift into neutral set parking brake stop engine and remove key to prevent unintended starting Figure 8 A Clutch brake Pedal E Ignition Switch B Choke Control F Shift Lever C Throttle Control Lever G Speed Control Lever Parking Brake D Deck Engagement Lift Lever H ...

Страница 12: ...es to the desired position Release the speed control lever and the clutch brake pedal NOTE The parking brake must be set if the operator leaves the seat with the engine running or the engine will automatically shut off IMPORTANT Always set the parking brake when leaving the tractor unattended Shift Lever The shift lever is located in the center of the console and has three positions F Forward N Ne...

Страница 13: ... will return to the ON position IMPORTANT Do NOT hold the key in the START position for longer than ten seconds at a time Doing so may cause damage to your engine s electric starter After the engine starts deactivate the choke control and place the throttle control in the FAST position IMPORTANT Do NOT leave the choke control on while operating the tractor Doing so will result in a rich fuel mixtu...

Страница 14: ...t operate with speed control lever in a low speed position proceed as follows Place shift lever in NEUTRAL Restart engine Place speed control lever in highest speed position Release clutch brake pedal fully Depress clutch brake pedal Place speed control lever in desired position Place shift lever in either FORWARD or REVERSE and follow normal operating procedures Headlights The lamps on models so ...

Страница 15: ...atedly beneath the cutting deck The ultra fine clippings are then forced back into the lawn where they act as a natural fertilizer Observe the following points for the best results when mulching Never attempt to mulch if the lawn is damp Wet grass tends to stick to the underside of the cutting deck preventing proper mulching of the clippings Do NOT attempt to mulch more than 1 3 the total height o...

Страница 16: ...Protect your hands by wearing heavy gloves to grasp the cutting blade NOTE Check the tractor s tire pressure before performing any deck leveling adjustments Refer to Tires later in this section for further information regarding tire pressure The front of the cutting deck is supported by two lift links one of which can be adjusted to level the deck from both front to rear side to side The front of ...

Страница 17: ...way WARNING Keep hands and feet away from the discharge opening of the cutting deck NOTE The deck wheels on models so equipped are an anti scalp feature of the deck and are not designed to support the weight of the cutting deck Refer to Deck Leveling Adjustment on page 16 of this manual for more detailed instructions regarding deck adjustments Deck Engagement Adjustment WARNING Never attempt to ma...

Страница 18: ...ended starting If the tractor does not come to a complete stop when the clutch brake pedal is completely depressed or if the tractor s rear wheels can roll with the parking brake applied the brake is in need of adjustment The brake disc can be found on the right side of the transmission in the rear of the tractor Adjust if necessary as follows Looking at the transmission from the right side of the...

Страница 19: ...19 Lift the ball joint out of the steering arm and re position both front tires for straight ahead travel Loosen the jam nut See Figure 19 and thread the ball joint either inward or outward until it aligns with the hole in the steering arm Confirm that both the steering wheel and the front tires are still positioned for straight ahead travel before reinserting the ball joint into the steering arm ...

Страница 20: ...osition set parking brake stop engine and remove key to prevent unintended starting Cleaning the Engine And Deck Any fuel or oil spilled on the machine should be wiped off promptly Do NOT allow debris to accumulate around the cooling fins of the engine or on any other part of the machine especially the belts pulleys and other moving parts Clean the underside of the deck with a wisk broom scraper o...

Страница 21: ...ton Operator Owner Manual or Tecumseh engine s Owner s Manual packed with your unit for information regarding the quantity and proper weight of motor oil Air Cleaner Service the pre cleaner if so equipped and cartridge air cleaner element as instructed in the Briggs Stratton Operator Owner Manual or Tecumseh engine s Owner s Manual packed with your unit Spark Plug s The spark plug s should be clea...

Страница 22: ...ble tool disconnect the spring which is attached to a small hook found on the left rear portion of the transmission See Figure 24 Place the deck engagement lift lever in the BLADES STOP position Locate the two belt keeper pins found on either side of the engine pulley and use a 1 4 inch socket wrench to remove them from the lower frame See Figure 25 NOTE When reassembling make certain belt keeper ...

Страница 23: ...tting blade s for sharpening or replacement Protect your hands by using heavy gloves or a rag to grasp the cutting blade WARNING Periodically inspect the blade adapter and or spindle for cracks or damage especially if you strike a foreign object Replace immediately if damaged The blades may be removed as follows Remove the deck from beneath the tractor refer to Cutting Deck Removal on page 22 then...

Страница 24: ...at six amps WARNING Batteries give off an explosive gas while charging Charge battery in a well ventilated area and keep away from an open flame or pilot light as on a water heater space heater furnace clothes dryer or other gas appliances Jump Starting WARNING When removing or installing the battery follow these instructions to prevent the screwdriver from shorting against the frame IMPORTANT Nev...

Страница 25: ... stabilizer rod to the stabilizer bracket See Figure 31 After the deck is removed and the stabilizer bracket and rod the upper deck belt can be simply lifted off of the double pulley located in the rear center of the cutting deck To remove the lower deck belt Follow all steps above for removing the upper deck belt Remove the belt guards located over each outer spindle pulley by removing the self t...

Страница 26: ... the POSITIVE Red wire Detach the battery hold down rod and remove both the battery and battery tray from the tractor Locate the transmission pulley though the battery tray opening See Figure 33 Figure 33 Using an impact gun with a 13 16 inch socket remove the pulley from the transmission s input shaft by removing the flange nut which secures it Carefully lift the pulley off of the transmission s ...

Страница 27: ...any type of power equipment in an unventilated or metal storage shed care should be taken to rustproof the equipment Using a light oil or silicone coat the equipment especially any chains springs bearings and cables SECTION 10 ATTACHMENTS ACCESSORIES The following attachments and accessories are compatible for Lawn Tractor Models 660 668 See the retailer from which you purchased your tractor an au...

Страница 28: ...ot start Throttle Choke not in correct position No fuel to the carbu retor No spark to spark plug Dirty air cleaner Refer to Starting the Engine in this manual for correct position of the throttle control and choke control Gasoline tank empty Fill with clean fresh gasoline Fuel line or in line fuel filter plugged Remove and clean fuel line Replace filter if necessary Spark plug lead disconnected C...

Страница 29: ...29 NOTES ...

Страница 30: ...30 NOTES ...

Страница 31: ...31 NOTES ...

Страница 32: ...aintenance items such as lubricants filters blade sharpening tune ups brake adjustments clutch adjustments deck adjustments and normal deterioration of the exterior finish due to use or exposure d MTD does not extend any warranty for products sold or exported outside of the United States its possessions and territories except those sold through MTD s authorized channels of export distribution e Re...

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